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;;; csv-conf.el --- For dealing with CSV files -*- lexical-binding: t; -*-
;; Copyright (C) 2021 李俊緯
;; Author: 李俊緯 <mmemmew@gmail.com>
;; Keywords: convenience, tools
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
;;;###autoload
(defun calculate-grades ()
"Return an alist of grades and number of repititions."
(interactive)
(let (grouped-ones field-start name grades temp-grades num1 num2 num3 current)
(with-current-buffer "all names.csv"
(goto-char (point-min))
(forward-line 1)
(while (< (point) (point-max))
(cond
((save-excursion (goto-char (line-end-position))
(thing-at-point 'number))
(re-search-forward "," (line-end-position) t 4)
(setq field-start (point))
(re-search-forward "," (line-end-position) t)
(setq grouped-ones
(cons
(cons
(upcase
(buffer-substring-no-properties
field-start (1- (point))))
nil)
grouped-ones))))
(forward-line 1)))
(with-current-buffer "b24189.csv"
(goto-char (point-min))
(forward-line 1)
(while (< (point) (point-max))
(re-search-forward "," (line-end-position) t)
(setq field-start (point))
(re-search-forward "," (line-end-position) t)
(setq name (buffer-substring-no-properties
field-start (1- (point))))
(re-search-forward "," (line-end-position) t 3)
(setq num1 (or (thing-at-point 'number) 0))
(re-search-forward "," (line-end-position) t)
(setq num2 (or (thing-at-point 'number) 0))
(re-search-forward "," (line-end-position) t)
(setq num3 (or (thing-at-point 'number) 0))
(setq grades
(cons
(list name num1 num2 num3)
grades))
(forward-line 1)))
(with-current-buffer "2021-07-02T1637_成績-代數導論二_(MATH2114).csv"
(goto-char (point-min))
(forward-line 1)
(while (< (point) (point-max))
(re-search-forward "([^)]*,[^)]*)" (line-end-position) t)
(re-search-forward "," (line-end-position) t 2)
(setq field-start (point))
(re-search-forward "@" (line-end-position) t)
(setq name (buffer-substring-no-properties
field-start (1- (point))))
(re-search-forward "," (line-end-position) t 2)
(setq num1 (or (thing-at-point 'number) 0))
(re-search-forward "," (line-end-position) t)
(setq num2 (or (thing-at-point 'number) 0))
(setq temp-grades
(cons
(append (list name)
(alist-get name grades nil nil #'string=)
(list num1 num2))
temp-grades))
(forward-line 1))
(setq grades temp-grades)
(setq temp-grades nil))
;; Now grades has the form (name quizI quizII mid quizIII final)
;; quizI is actually useless and should not have been collected.
(while (consp grades)
(setq current (car grades))
(setq grades (cdr grades))
;; Three scores:
;; 1. final
;; 2. (final+mid)/2
;; 3. (final/2+mid*3/10+ (sum quizs) /10)
;; abuse the variable field-start to add extra scores
(setq name (car current))
(setq field-start
(cond
((assoc name grouped-ones #'string=)
(message name)
7)
(0)))
(setq num1 (+ field-start (nth 5 current)))
(setq num2
(+ field-start
(/ (+ (nth 3 current)
(nth 5 current))
2.0)))
(setq num3
(+ field-start
(+ (/ (nth 5 current) 2.0)
(/ (* (nth 3 current) 3)
10.0)
(/ (+ (nth 2 current)
(nth 4 current))
2.0))))
(setq temp-grades
(cons
(list (car current)
(max num1 num2 num3)
num1 num2 num3)
temp-grades)))
temp-grades))
(provide 'csv-conf)
;;; csv-conf.el ends here
|
